So not fit for purpose for over water ops then?
I still remember the HUET course I did in HMS Dolphin in the early eighties. The exciting wet bits were preceded by a seemingly endless briefing going into great detail about exactly how we would die in every helicopter in NATO's inventory. One highlight was how fast the Lynx would sink. ISTR the lecturer talking about 'sinking trials' of a Lynx in a Scottish loch with divers aboard. Under certain conditions it sank so fast the divers could not physically extract themselves from their seats.